TechwareLabs has published a review of the new Quad Core AMD Barcelona
A quote from the article:
AMD Barcelona Review
In just a short few hours AMD will officially launch its newest addition to is server processor lineup named Barcelona. Barcelona marks an important point in the AMD roadmap as it is AMD's first quad core server cpu. We at TechwareLabs have a first look at this new CPU and its performance for you, and we will try to help you answer the question "Will Barcelona set the bar for server chips to measure up to?"
AMD Barcelona Review